^^blood bags are only good if you're actively teaming up with other players, otherwise, look for a hatchet, knife and matches, then go hunt in the woods (all these items are pretty common, usually i find em on one raid through cherno or elektro ...)
a cow gives 8 steaks, a bore 4 and then you have some other critters, goats and rabbits....
annyways, kill one with your gun , then gut it with your hunting knife, collect the raw steaks, then go into the forest, use your hatchet on a tree to collect a wood pile, make a fireplace with your matches, light the fire then cook the meat on the fire, each steak gives 800blood so 1 cow replenishes 6400blood which is pretty good if you ask me :)
meat is actually pretty easy to find, if you're moving from one city to another, try to get off the roads and you'll be sure to stumble upon an animal within a few minutes ....
(ps: the fire attracts zombies and the smoke is visible from far away so it also attracts bandits, try to make your fire somewhere hidden, preferably in a dense part of the forest, far away from any buildings ... and don't forget to put it out when you're done cooking)
